This is my first post to the MX Linux forums, so may I start by saying that I love this distro. Just started using it a month ago and I'm thoroughly impressed.

Now, onto business, I installed the Liquorix kernel through the MX Package Installer. After installation competing mostly successfully¹ I restarted the machine and noticed that the 'Liquorix 64 bit' kernel entry in the kernel list in the MX Package Installer wasn't greyed out like 'MX 4.15' was, and I couldn't select it and uninstall it. I could "Install" it again, but not remove it. To be sure this wasn't something that could be fixed simply, I installed an update—a single package needed updating, I don't think it's at all relevant—and rebooted. I opened MX Package Installer and the problem persists.

Here's a screenshot:

I've also never submitted a bug report before, so if there's anything I should add, please let me know.

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯¹ There were some warnings being treated as errors about VirtualBox guest stuff, but since I don't plan on using VirtualBox on this machine, I don't really care.

The "latest" liquorix kernel installer is a little.bit of a cheat. That package updates quite a bit so that one points to a metapackage that is removed after installaton of the kernel.

The upside is that when new liquorix kernels are added the same routine brings the newer kernel in. The downside is what you've descibed. However the kernels are uninstall able via all the other apt tools (cli, synaptic, and mx-pi 's stabe tab.